#include<stdio.h>
int main()
{
	double x,y;
	printf("Please enter two nubers,x and y.\n");
	scanf("%lf %lf",&x,&y);
	printf( "x+y=%lf\n\
x-y=%lf\n\
x*y=%lf\n\
x/y=%lf\n",x+y,x-y,x*y,x/y);
	printf("x%%y=%d",(int)x%(int)y);
	return 0;
}
